Tuft yarn frame for looms for weaving tufted pile fabric



March 14, 1933. I 51:; CLARK 1,901,435

TUFT YARN FRAME FOR LOOMS FOR WEAVING TUFTED FILE FABRIC Original FiledMay 23. 1930 INVENTOR.

Patented Mar. 14, 1933 U T-Box STATES PATENT" orrlca Y Etienne r. creamor DAMAaIsco'rrA, Mama, ASSIGNOR T0 MARSHALL FIELD MILLS CORPORATION, orP ILADELPHIA, rnnnsyrvamn, a CORPORATION or IENNSYL;

Mme i TUE-T YARN FRAME FOR LOOMS FORWEAVING TUFTED IPILE FABRIC Beflleof application Serial- No. 454,949, filed This inventionrelates toimprovements in tuft'yarn framesor carriers for carrying anddeliveringthe tuft yarns in looms for weaveach provided with a "rowofpassages for receivingthe delivery end portions of the strands from thespool and for maintaining them in propcrlateral spaced relation.

A number of these frames are mounted in spaced parallel relation on apair of'carrying chains which are actuated to bring the framessuccessively into ayarn delivering position,

and each time a frame is brought .into'such.

position, instrumentalities ofthe loom act upon the. delivery endportions of the yarn strands and draw them through the passages, and,thereafter, a cutting device cuts from the strand parts of sufficientlength toform pile tufts, and leaves the ends of the yarn strands inposition with relation to the frame or carrier to be acted upon by theinstru mentalities of the loom thenext time the frame or carrier isbrought into the yarn delivering position. p I

The object of my invention is to. provide a novel and advantageous meansfor produc- .ing friction upon the yarnstrands when they are drawnthrough theyarn passages, and, thereafter,for holding the delivery endpor tions of the strands in even and uniform relation to the frame orcarrier so thateach-time the frame or carrier isbrought into theyarndelivering position, yarn tufts of uniform length will be cut from thestrands.

The invention resides in the novel .con-

struction, combination and arrangement of elements, hereinafterdescribed and; claimed. In the accompanying drawing, illustrating theinvention,

Figure 1 is a front View of one end portion of a tuft yarn frame,showing one form of.

embodiment of my invention, illustrating only a portion of the yarnstrands on the spool carried by the frame. 1

Figure 2 is atransvei' se section through the same, online 22 of Fig. 1.v

the yarn strands 5 extend. These projec- May 23, 1930.- This applicationfiled June 18, 1931. Serial Referring to the 'drawing, 8 designates thelong body bar of the tuft yarn frame, t one end portion of a spoolcarried by the frame, and 5 the tuft yarn strands carried by the spool.

I The bar 8 is, provided withsuitable bearing arms for 'rotatablysupporting the] respec tive ends of the spool, one end portion of thespool 4 anda bearingjarm 6 supporting it being shown in Fig. 1. 1 j Therespective ends'of the body bar 3 are provided with oppositely disposedchainen gaging arms and latches like. thearm 7 and latch 8shown in Fig.1, for connecting .the frame to the chains of the loom which carry theseries" of tuft yarn frames thereof and bring V ering position. c p Thebottom ofthe bodybar- 3'is provided with arow of transversely extending,laterally spaced plates 9'which are suitably connected to and projectfrom} a longitudinally extending angle barlO secured tothebottom v ofthe body bar. .These plates'9 extend forwardly, of the forward surface11 of the body bar 3. and provide passages 12'between them through whichthe free or delivery endportions ofthe tuft yarn strands 5. are drawn,the plates 9 serving to maintain the free end portions ofthe strands fin L lateral spaced relation. i i

The plates 9 are provided with forward and rearward, laterally extendingprojec- Y tions, 13 and 14, respectively,between which tions serve toprevent forward and rearward displacement of the strands .5 within thepassages 12. Y

The parts provlding yarn passage s may be of any suitable form; Theplates ,9

herein illustrated which form the passages 12 are designed for use inlooms in which: grippers are employed which enter the'passages or spacesbetween the plates 9 and grasp the end portions of the strands 5 there 7in and draw'them from the spool 4 and through the passages 12 untilthere. is sufiicient yarn extending below the line .15 to form piletufts, whereupon thepile tufts are cut from the strands on the line 15and sub:

sequently woven into the fabric being prov duced by the loom. Thisoperation is performed each time the frame is brought into the yarndelivering position. i

Arranged adjacent to the forward surface 11 of the body bar 3 andextending longitudinally thereof, in parallel relation thereto, is arelatively thin, flat steel spring 16 between which and the forwardsurface 11 of the body bar 3 the yarn strands 5 are drawn when thestrands are drawn through the passages 12 by the grippers. This springor element 16 is supported at suitable intervals throughout the lengthof the body bar 3 by narrow brackets 17 which embrace the spring 16 andhave their end portions soldered or otherwise suitably'secured to thebar 3. The brackets 17 are arranged above and in alinement with certainof the plates 9 so that the strands 5 may pass the brackets on therespective sides thereof without interference as the strands pass fromthe spool 4 to the passages 12.

The spring or element 16 may be removed,

from the body bar 3 by withdrawing it longitudinally from within thebrackets 17 and it is inserted into the brackets 17 forwardly of theyarn strands 5 after the strands have been inserted into the passages12.

The spring or element 16 is located a slight distance above theforwardly projecting portions of the plates 9 and it extends over allthe yarn strands 5 which pass from the spool 4 to the passages 12. Thespace between thespring 16 and the forward'surface of the bar 3 isslightly less than the general normal diameter or thickness of the yarnstrands 5 so that the strands will be compressed slightly as theypassbetween'the spring and the bar, thereby causing the spring and barto press against the strands and retard the movement thereof toward thepassages 12. The elastic character of the spring or element 16 permitsit to yield outwardly from the bar 3 to permit any irregularitiesin thediameter or thickness of the strands5 to pass between the element 16 andbar 3, the element 16. returning automatically to normal relation withthe bar 3 after the passage of such irregularities. d hen the strands 5are drawn through the passages 12, as previously described, the pressureof the sprin or element 16 against them will produce su cient frictionto cause all the strandsto be drawn through the passages undersubstantially the same degree of ten- SlOIl;

After the strands 5 have been drawn through the passages 12 and cut onthe line 15, as previously explained, the pressure of the spring orelement 16 against them will hold them in the same position with respectto the bar 3 which they occupied previously to the cutting operation andprevent either the natural elasticity inherent in the strands or thetendency thereof to resume the curvature of their previously occupiedpositions on the spool 4 from causing an of the strands to move back orwithdraw from the position which they occupy within the passages 12atthe time the cutting operation takes place; Therefore, each time piletufts are cut from thestrands 5, the delivery end portions ofthe strandswill be left in an even row to be engaged by the loom gripper or otherdevices prior to the next succeeding cutting operation, resultin in thedesired removal of pile tufts of uni orm length from the'st-rands 5 ateach cutting operation.

This application is a refiling of applioation Ser. N 0. 454,949. I Iclaim as my invention:

1. In a tuft yarn frame, a body bar provided with spool supporting meansand provided also with parts forming a row of passsages for-yarn strandsand a yieldable element carried by and extending longitudinally of thebar and having an uninterrupted surface extending continuously acrossthe paths of a multiplicity of yarn strands passing from'a spoolsupportedby said means to said passages and 'constr'ucted'to engage andpress against the strands.

2. In a tuft yarn frame, a body bar provided with spool supporting meansand provided also with parts forming a row of'passages for yarnstrandsand a yieldable element carried by and extending longitudinally of thebar across the paths of yarn strands passing from a spool supported bysaid means to said passages and constructed to engage and press againstthe strands and means carried by the bar for detachably connecting saidelement thereto, said element being movable longitudinally into and fromengagement with the last named means.

3. In a tuft yarn frame, a body bar provided with spool'supporting meansand provided also with parts carried by'the bar and extending forwardlyfrom the lower portion thereof andforming a row of passages for yarnstrands and asingle, yieldable, friction producing'element carried bythe bar above said parts and constructed to press against a multiplicityof yarn strands passing from a spool supported by said means to saidpassages.

4. In a tuft yarn frame a body bar provided with spool supporting meansand provided also with parts forming a row of passages for yarnstrands,a, friction producing element carried by and extending longitudinally ofthe bar for engaging yarnstrands passing between the element and the barto said passages and means for detachably connecting said element to thebar at spaced points longitudinally of the element;

5. In a tuft yarn frame, a body bar provided also with parts forming arow of pas .vided with spool supporting means and pro- 0 sages for yarnstrands and a single, yieldable, friction producing element carried bythe bar and having an uninterrupted surface constructed to engage amultiplicity of yarn strands passing between the element and the bar tosaid passages.

6. In a tuft yarn frame, a body bar provided with spool supporting'meansand provided also with parts carried by the bar and extending forwardlyfrom the lower portion thereof and forming a row of passages for yarnstrands, a friction producing element carried by and extendinglongitudinally of the bar above said parts for engaging a multiplicityof yarn strands passing between the element and the bar and means fordetachably connecting said element to the bar.

7. In an individually transportable tuft yarn carrier for looms, a frameor carrier proper, spool supporting means thereon, a series of yarnguides along and secured to said frame or carrier, and a resilientyarn-tension v ing sheet-metal strip for and common to a multiplicity ofsaid guides, said strip being carried by and in substantial parallelismwith the frame or carrier as a whole for movement into and out oftensioning relation to the yarns to be guided.

8. In a tuft yarn frame, a body bar provided with spool supporting meansand provided also with parts forming a row of passages for yarn strands,a yieldable element carried by and extending longitudinally of the baracross the paths of a multiplicity of yarn strands passing from a spoolsupported by said means to said passages, and constructed to engage andpress against the I strands and brackets carried by said bar at spacedpoints longitudinally thereof and having alined openings -thereinthrough which the element extends.

. In testimony whereof I afiix' my signature.

EUGENE F. CLARK.

